Title :
A new method for driving synchronous rectifiers
Author_Institution :
Nortel Networks, Ottawa, Ont., Canada
Abstract :
A new method for driving synchronous rectifiers in DC-DC switching converters is proposed. The driving voltage for the synchronous rectifier transistor is derived from both, forward and reset transformer primary voltage. The phenomenon of "a small relative change of the sum of the forward and reset transformer primary voltage" in clamped forward topologies is explained and used effectively. The performance of the proposed solution was simulated on computer and experimentally verified on several converter prototypes.
Keywords :
DC-DC power convertors; driver circuits; rectifying circuits; switching convertors; DC-DC switching converters; converter prototypes; driving synchronous rectifiers; transformer primary voltage; Computational modeling; Coupling circuits; Current transformers; FETs; MOSFETs; Rectifiers; Strontium; Switching converters; Threshold voltage; Topology;
Conference_Titel :
Telecommunications Energy Conference, 2003. INTELEC '03. The 25th International
Conference_Location :
Yokohama, Japan
Print_ISBN :
4-88552-196-3
